| 摘要 |
The total or a partial quantity of lubricant oil for automotive vehicles is exchanged at a gas service station when a vehicle visits for its fuel supply. The lubricant oil is maintained with low values of contaminates, while extracted waste oil is purified and supplemented with lacking additive agents for reuse as fresh lubricant oil. An impurities removal equipment has a centrifuge and a filter device for the purification.
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